Alternate PLO leaders if Arafat got sidelined or killed anytime after 1965 to 1979

Who would be alternate PLO leaders if Arafat got sidelined or killed anytime after 1965 to 1979

Please give names of realistic PLO chairmans if you have

I was gonna say Goerge Habash but he was too hated by the PLO bigiwgs and too left wing
Who else could be PLO chairman if Arafat got killed or sidelined?
 
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